package risoe.syslab.fhnew.config;

/*
 * Copyright (c) 2012-2014, Technical University of Denmark (DTU)
 * All rights reserved.
 * 
 * The Flexhouse 2.0 platform ("this software") is licensed under the
 * BSD 3-clause license.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *   - Neither the name of DTU nor the names of its contributors may be used to
 *     endorse or promote products derived from this software without specific
 *     prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE TECHNICAL UNIVERSITY OF DENMARK BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;

import risoe.syslab.fhnew.common.SystemConstants;
import risoe.syslab.fhnew.common.SystemConstants.DeviceType;
import risoe.syslab.fhnew.controller.DefaultController;

public class DefaultControllerConfig {
	public static final String CONTROLLER_TAG="controller";
	private static final String NAME_ATTR="name";
	private static final String DEVICETYPE_ATTR="devicetype";

	private String mName;
	private DeviceType mDeviceType;
	private Class<? extends DefaultController> mController;

	private DefaultControllerConfig() {
	}

	@SuppressWarnings("unchecked")
	public static DefaultControllerConfig parse(Node in) {
		if ((in.getNodeType()==Node.ELEMENT_NODE) && (CONTROLLER_TAG.equals(in.getNodeName()))) {
			NamedNodeMap attrs=in.getAttributes();

			String ifname;
			Node _ifName=attrs.getNamedItem(NAME_ATTR);
			if (_ifName!=null) {
				ifname=_ifName.getNodeValue();
			}
			else {
				throw new IllegalArgumentException(CONTROLLER_TAG+": Missing '"+NAME_ATTR+"' attribute.");
			}

			String iftype;
			Node _ifType=attrs.getNamedItem(DEVICETYPE_ATTR);
			if (_ifType!=null) {
				iftype=_ifType.getNodeValue();
			}
			else {
				throw new IllegalArgumentException(CONTROLLER_TAG+": Missing '"+DEVICETYPE_ATTR+"' attribute.");
			}
			
			DefaultControllerConfig config = new DefaultControllerConfig();
			config.mName = ifname;
			config.mDeviceType = SystemConstants.getDeviceType(iftype);

			// Get the correct hardware interface
			try {
				Class<? extends DefaultController> aClass = (Class<? extends DefaultController>) 
						Class.forName("risoe.syslab.fhnew.controller."+ifname);

				config.mController = aClass;
			} catch (ClassNotFoundException e) {
				System.out.println("Error: "+e);
				e.printStackTrace();
			} catch (SecurityException e) {
				e.printStackTrace();
			} catch (IllegalArgumentException e) {
				e.printStackTrace();
			}
			
			return config;
		}
		return null;
	}

	public String getName() {
		return mName;
	}
	
	public DeviceType getDeviceType(){
		return mDeviceType;
	}
	
	public Class<? extends DefaultController> getControllerClass(){
		return mController;
	}
}
